Martin Midstream Partners is a publicly traded MLP that provides midstream logistics and processing services for petroleum products and by-products along the U.S. Gulf Coast. The partnership operates four business lines: terminalling and storage, transportation, sulfur services, and specialty products. In terminalling and storage, Martin Midstream owns or operates marine shore-based and specialty terminals, storing petroleum products, asphalt, sulfur, and NGLs under fixed-fee or minimum throughput contracts. In transportation, the partnership moves specialty bulk liquids by truck, tank trailer, and inland barge throughout the Gulf Coast and southeastern U.S. In sulfur services, Martin Midstream gathers molten sulfur from Gulf Coast refineries, processes it into solid or fertilizer-grade products, and distributes it domestically and internationally. In specialty products, the partnership blends and packages lubricants and greases, and distributes NGLs — primarily propane — to industrial users and retailers. Revenue comes from a mix of fee-based contracts (dominant in terminalling and transportation) and commodity-exposed buy/sell activity (prominent in sulfur services and NGL marketing). A notable structural feature is Martin Midstream's relationship with its parent, Martin Resource Management Corporation, which operates the partnership, supplies all employees, serves as a key customer, and acts as counterparty on many commodity transactions — concentrating operational dependency on a single related party.